"Zinc Sulfate in the Treatment of Rosacea: A Randomized, Zinc-induced copper. 3% gel and erythromycin 4%/zinc 1.2% solution in the treatment of acne. How to Reduce Acne Scars with Home Remedies. Acne scars occur when a pimple or cyst gets popped or broken, leaving behind a layer of damaged skin. Jul 10, 2014. However, acne […]